Device for making strings of pressed articles



Dec. 19,1950 A. P. R. OBERMANN ETAL 2,534,673

DEVICE FOR MAKING STRINGS 0F PRESSED ARTICLES Filed Feb. 18, 1946 2 Sheets-Sheet 1 NVE/VTJKS A/vw/v [7675K klgf f /mo (M /(MANN KIC/Mkp W/LLEM Hen/2km oss/zm/v/v Dec. 1950 A. P. R. OBERMANN ETAL 2,534,678

DEVICE FOR MAKING STRINGS 0F PRESSED ARTICLES Filed Feb. 18, 1946 2 Sheets-Sheet 2 IN vew T025 ANTbN Perm RICHARD ogszrlA/v/v RlcHAKD V LLE/ l HENDKM OBEKMfl/VN 17 KNE/ Patented Dec. 19, 1950 FOB M NG TB NG rRiissED An'r oLns Anton P- B.- Oberman Santnocri, and Eichard W! H, Qbe mann. l e hendaal, Ne h r nds, ass nors, b mem ssig m nts to Y- flh fli che nda r ide? liaa lcm Ncih rlands, a company of the Netherlands Application February 18, 1946, Serial No. 64 8, 148 I t N an s Ma 1, 194.

Section 1, Public Law 690, August 8, 1946 Patent expires May 27, 196-3 4 Claims.

It is an object .075 the invention to produce as a new article of manufacture pressed articles, 'e. g. the well-known moth balls, which are arranged on a thread, a wire, a cord, a ribbon or tape or in general a line in regular distances. Moth balls in such an arrangement can be l andled easily. They can be hung up e. g. in greater numbers together in cabinets, on clothes etc.

It is a iurther object of the invention to provide for a machine for producing the said strin s .of pressed articles in'which the line is guided in "such a manner that it really will lie in the axis of each pressed article, whereas at the same time a regular succession of articles at regular dis-. tances will be obtained Another object of the invention is to provide for a machine as indicated which will have a hi capacit e. wh ch th ticle are p essed nd the. s r n s manu red at a high velocity.

In the drawings:

Fig. 1 is an elevational view of the main part of the machine. I

Fig. 2 is a side view from the left in Fig. 1.

Figure 3 is a vertical sectional view of the machine taken along broken lines A -B in Figure 1.

On a horizontal shaft I a wheel or diskshaped cylinder is mounted, which is composed of two parts 2 and 3, which are put one against the other and are interconnected e. g. by screws 4. Each of the members 2 and 3 has in regular distribution on the common plane of contact half cylindrical cavities, which form together the matrix cavities 5 in the circumference of the cylinder 2, 3. There is no contact between the cylinder members 2 and 3 along the circumference, i. e. between two successive cavities 5 there is only contact in the area 6 adjacent the screw 4 and outside of this area a slot 1 is left free.

In each of the cavities 5 lies a plunger 8, which is made as a matrix. The inner ends of the plunger 8 abut against a stationary disk 9, which has a somewhat eccentric position relative to the cylinder 2, 3 and its shaft I (centre H1). The plungers 8 are kept in contact with the said guiding disk 9 by means of springs ll. During rotation of the cylinders 2, 3 the plungers 8 will glide along the periphery of the guiding disk 9 and as a result they will be moved periodically inwardly and outwardly in the cylinder 2, 3 in such a manner, however, that at the top (corresponding with the filling and pressing position), they will have their maximum inward position, whereas at the bottom (at the delivery point of the tablet), they are moved cut ardl to their maximum extent. By means of rotating the guiding disk ,9 exact dosin be b ined ethe dimensions of the tab ets a be con rolled.

At the top a filling ho er I1 fit 9n he swim der '2, 3 This banner prov d i h a 5' .n device L3, The banner 2 fi led it wdered mater al and very im a cav t 5 n the ylinder .3 pas e undern ath th s h per it will be fil p h this p wder ub t ce,

The cy d r ro a ed a step by step moveme t in the direct on o the arrow 14. Th d ivin mechan sm there o e is no sho y be ccnsti utcd b a aw de ice- Ea h ste must exact $9 as to b ng periodi a y a cavity 5 o posite the d e 15 mo in up an down cont nuo s n his p on e l nder 3 also must be latched during the working stroke.

. The latch mechanism is not shown.

- In he di io of rota io o e cy nder 2, .3 (arrow I l) a thread I! coming from a bobbin is introduced into the slot 1 between the members 2, 3, before the hopper I2. This thread thus always will pass through the axis of the cavities 5. After these cavities 5 are filled up from the hopper I2 the contents are compressed immediately by the die I5 so that a tablet will be formed, which sticks to the thread. During further rotation of the cylinder 2, 3 the tablets thus formed are pushed outwardly until they leave the cavities 5 at I8. The string 20 is delivered here.

When a very inextensible thread I! is used, the stroke of the die l5 may increase the tension in this thread to such an extent that the thread could break. Then it will be necessary to take care that always some play will be in the thread between two successive cavities. This may be obtained by means of thread guiding members as are diagrammatically illustrated at 2|. Such a member is formed by a pin, which is movable against the thrust of a spring 24 in a direction transverse to that of the thread. This pin comprises a projection 22, which engages the thread l1. Just after a tablet has been pressed and still before the next tablet will be pressed, the pin immediately following the tablet pressed already meets a cam ridge, which causes the pin to be lifted with the result that the projection 22 draws some play into the thread ll.

What We claim is: I

1. A machine for the manufacture of pressed articles arranged on a string-like member in regular distances, comprising a cylinder arranged for step by step rotation about its axis and pro vided in its circumferential surface with matrixcavities and with an uninterrupted slot running across the said cavities, a stationary filling Station opposite one point of the said surface and a reciprocable die at a stationary position opposite another point of the said surface acting radially to said surface, and guiding members for the string-like member being provided within the said slot between successive matrix-cavities, said guiding members being arranged for movement in a transverse direction of the slot, so as to provide for some play in the string-like member between two matrix-cavities.

2. In a machine for the manufacture of pressed articles on a string, in combination, a rotatable cylinder having matrix-holes arranged along its surface, feeding means disposed to face said surface and said holes, a channel in said surface disposed concentrically to said cylinder and arranged to traverse said holes, means for feeding a string element into said channel, said element being adapted to travel with and in the direction of the rotation of said cylinder, a reciprocable die located in a stationary position opposite said surface and said holes, said die being adapted to radially, intermittently enter in, and withdraw from successive ones of said holes, spring plungers in said holes acting radially outward against said die, string guiding means in said cylinder, said string guiding means being disposed at and transversely to said channel, and ejection means stationarily disposed within said cylinder adapted to glidingly engage the inner ends of said spring plungers.

3. In a machine for the manufacture of pressed articles on a string, the combination according to claim 2 wherein said string guiding means comprise a pluralit of pins having pinheads adapted to be movable resiliently against the thrust of respective springs, said pins and said springs being disposed so as to project transversely into said channel, said pinheads engaging said string element so as to draw play into the same.

4. In a machine for the manufacture of pressed articles arranged on a string the combination according to claim 2 wherein said ejecting means comprise a drum stationaril disposed within said cylinder so as to be placed eccentrically and stationary with respect to said cylinder, the inner ends of said plungers glidingly abutting the surface of said drum whereby said plungers are gradually radially raised towards said surface of said cylinder, expelling articles which may be located in said matrix holes together with said string element connected thereto.

ANTON P. R. OBERMANN. RICHARD W. H. OBERMANN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 832,553 Marsh Oct. 2, 1906 1,091,441 Robertson Mar. 24, 1914 1,481,866 Heist Jan. 29, 1924 1,563,912 Miller Dec. 1, 1925 1,970,396 Scherer Aug. 14, 1934 2,263,340 Kraemer Nov. 18, 1941 2,287,675 Fair et a1 June 23, 1942 2,348,036 Synek May 2, 1944 2,366,932 Plebanek Jan. 9, 1945 FOREIGN PATENTS Number Country Date 12,101 Great Britain 1848 373,423 Great Britain May 26, 1932 

